发明名称 |
PROCESS FOR REMOVING ANTHRAQUINONE TYPE SCALE |
摘要 |
<p>A process for removing an anthraquinone type scale comprises condensing steam evaporated from a black liquor obtained by separating pulp from a digested mixture of lignocelluloses containing an anthraquinone type digesting assistant; and contacting a heated aqueous solution of a base in the presence or absence of a reducing agent or an alkali resistant surfactant with a wall of a condenser of an evaporator on which said anthraquinone type scale is adhered.</p> |
申请公布号 |
CA1182723(A) |
申请公布日期 |
1985.02.19 |
申请号 |
CA19810391099 |
申请日期 |
1981.11.27 |
申请人 |
KAWASAKI KASEI CHEMICALS LTD. |
发明人 |
SAKAI, KAZUAKI;SATO, TUNEYASU;CHIBA, KAZUHIKO |
分类号 |
C23G1/14;D21C11/10;(IPC1-7):B08B3/08 |
主分类号 |
C23G1/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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